Assuming you are talking about your performance car business, a yellow pages ad seems important. I've had great to horrible luck with yellow pages and the result depends upon the product. I did great in a franchised RE office and terrible in a motel.

Your question is how to get your business in front of those who feel the need for speed. Each market is different. Are there clubs fo the kinds of cars you equip or work on? AutoX, drift, drag, road race, brand? Car shows, events, local tracks?

Good Luck and Good Selling!